CN2903711Y

CN2903711Y - Briquette boiler of setting straight-through hole at front arch

Info

Publication number: CN2903711Y
Application number: CN 200620090047
Authority: CN
Inventors: 侯临泰
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-05-23
Anticipated expiration: 2016-03-28

Abstract

A briquette boiler with through-holes on the face arch includes a fire box, a fire tube, a front smoke-box, a back smoke-box, a face arch and a rear arch, and is characterized in that a through-hole is provided above the face arch, and a blank cap is assembled on the through-hole. The utility model opens the through-hole when the boiler performs low load operation without the draught fan, thereby the high-heat flue-gas does not pass a first and a second return, and passes the front smoke-box to a third return, leaving the fire tube temperature higher than dew-point temperature, which solves the condensation of moisture phenomena entirely, not only prolongs the boiler durability, but also improves the air environment of the boiler house, meanwhile, low load operation without the draught fan drives the flue gas to pass directly and reduces flue gas resistance apparently, and natural wind lift force of the chimney guarantees the fire box in load status, which avoids gas leakage and improves safety.

Description

Face arch is provided with the molded coal boiler of clear opening

Technical field

The utility model belongs to a kind of molded coal boiler, and particularly a kind of face arch is provided with the molded coal boiler of clear opening.

Background technology

Because China strengthens day by day to the environment protection control dynamics, the shared market share of molded coal boiler is increasing in recent years, and particularly for middle or small user, molded coal boiler has become the first-selected type of furnace with its feature of environmental protection, economy.Coal burning boiler is compared but molded coal boiler and tradition are loose, because molded coal boiler combustion system, characteristics difference, can not the such timely banking fire of astigmatism coal burning boiler, and be easy to cause underrun and make flue gas in the 3rd backhaul (smoke pipe), form dewfall, cause local corrosion.Excessive, the too high corrosion rate of more having accelerated of sulfur content of some moulded coal water content particularly.So how, just can make molded coal boiler can when normal operation, reach nominal output, again can be when underload (as igniting, night, when temperature is higher) guarantee that boiler is in the 3rd backhaul (smoke pipe in) formation dewfall? this is the big problem that present molded coal boiler needs to be resolved hurrily.

The utility model content

The purpose of this utility model provides the molded coal boiler that a kind of face arch is provided with clear opening, has both guaranteed boiler rated capacity, does not make the 3rd backhaul dewfall again; Only, avoid gas leakage, improved security by the rising wind-force naturally and can guarantee that fully burner hearth is in negative pressure state of chimney.

The purpose of this utility model is achieved by the following technical solution: it comprises burner hearth, smoke pipe, front smoke box, back smoke box, face arch and rear arch, it is characterized in that: a clear opening is set above face arch, assembles port lid on the clear opening.

See Fig. 1, when boiler normally moved, (white arrow was represented flue gas flow direction to flue gas among the figure by boiler by three backhauls, wherein Z1 represents first backhaul, and Z2 represents second backhaul, and Z3 represents the 3rd backhaul), both guaranteed boiler rated capacity, do not made the 3rd backhaul dewfall again; When boiler at low load operation (not driving air-introduced machine), clear opening is opened, (become first backhaul with the 3rd backhaul this moment to make the high-temperature flue gas of considerable part (can regulate) in the burner hearth directly not enter the 3rd backhaul by front smoke box by first and second backhaul, black arrow is represented flue gas flow direction among the figure, and wherein D1 represents first backhaul).

The utility model has the advantages that: get final product airtight openable again clear opening owing to above face arch, be provided with, when boiler at low load operation (not driving air-introduced machine), clear opening is opened greatly, make the high-temperature flue gas in the burner hearth not pass through first, two return and directly enter the 3rd backhaul by front smoke box, make smoke pipe place cigarette temperature be higher than dew-point temperature, fundamentally solved the dewfall phenomenon, it has not only prolonged boiler service life, also improved simultaneously air ambient in the boiler room, simultaneously, owing to do not drive air-introduced machine during underrun, the straight-through flue gas resistance that also significantly reduced of flue gas, only, avoided gas leakage, improved security by the rising wind-force naturally and can guarantee that fully burner hearth is in negative pressure state of chimney.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

See Fig. 1, concrete structure of the present utility model comprises existing structure division: assembling smoke pipe 6 in burner hearth 5, the front and back of burner hearth 5 are provided with front smoke box 4, back smoke box 7 respectively, and face arch 1, rear arch 8 are set respectively before and after the bottom of burner hearth 5.Improved technical essential: a clear opening 2 is set above face arch 1, the size in hole and boiler capacity coupling, the port lid 3 of removable opening and closing is assembled on clear opening 2 tops.Port lid 3 usefulness refractory concretes are prefabricated into, and port lid 3 is more bigger than the hole.When underrun (or exhanst gas outlet temperature cross low report to the police), stretch into from the wing furnace door with the stove hook and port lid 3 to be removed the short circuit of formation flue gas; When normal operation, build again and get final product.

Claims

1, a kind of face arch is provided with the molded coal boiler of clear opening, and it comprises burner hearth, smoke pipe, front smoke box, back smoke box, face arch and rear arch, it is characterized in that: a clear opening is set above face arch, assembles port lid on the clear opening.